Administrator Guide

After configuring the aaa authentication login command, configure the login
authentication command to enable the authentication scheme on terminal lines.
Connections to the SSH server work with the following login mechanisms: local, radius, and tacacs.
Related
Commands
● login authentication — enables AAA login authentication on the terminal lines.
● password — creates a password.
● radius-server host — specifies a RADIUS server host.
● tacacs-server host — specifies a TACACS+ server host.
aaa reauthenticate enable
Enable re-authentication of user whenever there is a change in the authenticators.
Syntax
aaa reauthenticate enable
To disable the re-authentication option, use the no aaa reauthenticate enable command.
Defaults Disabled
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.11(0.0) Introduced this command.
Usage
Information
When an operating system enables to change the user authenticators, the users might access resources
and perform tasks that they do not have authorization.
Once re-authentication is enabled, Dell EMC Networking OS prompts the users to re-authenticate
whenever there is a change in authenticators.
The change in authentication happens when:
● Add or remove an authentication server (RADIUS/TACACS+)
● Modify an AAA authentication/authorization list
● Change to role-only (RBAC) mode
The re-authentication is also applicable for authenticated 802.1x devices. When there is a change in the
authentication servers, the supplicants connected to all the ports are forced to re-authenticate.
Example
DellEMC(config)#aaa reauthenticate enable
DellEMC(config)#aaa authentication login vty_auth_list radius
Force all logged-in users to re-authenticate (y/n)?
DellEMC(config)#radius-server host 192.100.0.12
Force all logged-in users to re-authenticate (y/n)?
access-class
Restrict incoming connections to a particular IP address in a defined IP access control list (ACL).
Syntax
access-class access-list-name
To delete a setting, use the no access-class command.
Parameters
access-list-name Enter the name of an established IP Standard ACL.
1428 Security